Carriage spring machine



UNITED4 STATES PATENT OFFICE.

THEODORE H. BRIGGS AND SANDFORD J. HESS, OB OTEGO, NEW YORK.

CARRIAGE-SPRING MACHINE.V

SPECIFICATION forming part of Letters Patent No. 268.995, dated December12, 188.2. Application filed July 5, 1882. (No model.)

Toall whom it 'may concern Beit known that we, T. H. BRIGGS and S. J.HEss, citizens of the United States ot' America, residing at Otego,inthe county of Otsego and 5 State of New York, have invented certain newand useful Improvements in Carriage-Spring for use in the manufact-ureof elliptic springs; and it consistsin certainfeatureshereinafterdescribed, and specifically set forth in the claims.

The drawing represents in perspective a machine embodying ourimprovements.

A representsa suitable frame-work, in which is supported an uprightrectangular frame, B, adapted to receiveand permit the verticalreciprocation of asecond rectangular frame, C, lin which are arrangedcertain operatife devices, hereinafter described. The frame C isreciprocated in one direction by means of alever, D, pivoted to theframe B at d, and connected to the frame G by a rod, d', and to theoperating-lever E by the rod d2, which passes beneath the lever E inhook form, as at d3,

whereby its place on the lever may be located at will at desireddistances from the fulcrum e thereof. Within the frame C are secured one3 5 scribed, in such manner that the narrow portion of the bar F maypass down through or between certain devices placed across the path,

in and through which the bar is reciprocated during the operation of themachine; and in this case the bars FF are widened atff, and to thewidened portion aresecured spring-arms Gr, two each on either side-thatis, front and back ot'each widened portion f-the outer one Our inventionrelates to a machine designedv tachment of operating devices,hereinafter deof the spring-arms G beinglonger than the inner one of thepairs, and both pairs being secured by boltsg g passing through thespringarms and through the widened portion f', to which they areattached. The extremities of the 'spring-arms are each bent backupon'itself to form a bearing for the roller H, having iianges l1.,which vare adapted to embrace the sides ot' arched bed-pieces I. Thesebed-pieces are supported upon base-pieces J, resting in transverseblocks K upon or suitably secured to the frame-work. Each of the archedbedpieces I is hinged atits apex, as at t', and rests upon the ends ofthumb-screws t" ,passing vertically through the base-pieces J, and theselatter are at the end provided with thumb-screws j, which abut againstthe ends of the arched bed-pieces I. By this construction the curvatureof the arched pieces I may be changed by means of the screws t" andj ina manner readily apparent. It will be seen that there :is an arch foreach set of spring-arms and the rollers attached thereto, so that thenarrow portion of the rods F passes between the arches.

This being the construction, the opera-tion of our invention is asfollows: The springblank, heated as required, is placed upon thearch-piece I when the reciprocating frame O is in an elevated position,and consequently the spring-arms G and rollers El are free from contactwith the arch-pieces.- The blank at this time is substantially straight,and as the lever E is depressed the spring-arms and rollers are broughtdown upon the blank, and gradually shape it by pressing it firmly incontact with the arch-pieces, theaction of the rollers being first in adirect line, and afterward diverging from the center toward the end ofthe arches, and as they diverge the resistance of the springsincreases,and as the outer pair ot' springs arrive near the end of the archestheir resistance decreases,while that of their matesthe inner rollers ofthe pairs-is retained to about the maximum,- result-ing in not only4shaping the blank to the arched pieces, but

operating in a drawing manner from center to end, and by means of theflanges It keeping the blank in proper position upon the archpiece.

It' desired, an increased number of springarms and rollers may bearranged to operate on each arched piece, and the spring may, afterbeing putinto proper shape by the springarms and rollers, be tempered orcooled while on the arched pieces.

We hereby reserve the right to make subsequent application for thedevices and combination of devices herein shown 0r described, but notclaimed.

Having described our invention and its operation, What We claim as new,and desire to secure by Letters Patent, is

l. The combination, with the frames A, B, and C, of the arched pieces l,rods F and spring-arms G, flanged rollers H, levers D and E, and rods d.d2, substantially as shown and described.

e p essere.;

2. The combination ofthe frame C, and the rods F, widened at f', andprovided with spring-arms G, having anged rollers H, sub stantially asshown and described.

3. The combination of the frame C, bars F F, spring-arms G, angedrollers H, hinged.

THEODORE H. BRIGGS. SANDFORD J. HESS.

Witnesses.:

CHARLES STILsoN, PHILO A. GooDRICH.

